Furnace-controlling apparatus.



J. BENTON. FURNACE CONTROLLING APPARATUN APPLICATION FILED JAN. 15, 1913.

1,074,609, I Patented Oct. 7,1913.

227W x B x4. 7a I (44% 0 I a V win COLUMBIA PLANOGRAPH cu, WASHINGTON, D. c.

JOHN BENTON, 0F PATERSON, NEW JERSEY.

FURNACE-CONTROLLING APPARATUS.

Specification of Letters Patent.

Patented Oct. 27,1913.

Application filed. January 15, 1913. Serial No. 742,110.

To all whom it may concern Be it known that 1, JOHN DENTON, a citizen of the United States, residing at Paterson, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Furnace-Controlling Apparatus, of which the following is a specification.

This invention relates particularly to furnace controlling apparatus adapted to be released in performing the control periodi cally by a clock, and it consists in a certain novel combination and arrangement of parts whereby an ordinary alarm clock may be adapted to the service of effecting the release through its released alarm arbor without continuing to sound the alarm longer than is necessary to accomplish such release; and whereby the clock is kept free from undue strain tending to be exerted thereon by the parts whose release it efiects.

In the accompanying drawing, Figure 1 shows a clock-released furnace controlling apparatus constructed in accordance with this invention; Fig. 2 shows in rear elevation the case for the clock and the parts, controlled by the clock, concerned in the release of the controlling apparatus, said parts being in the restraining position; Fig. 3 is a side elevation of what is shown in Fig. 2; Fig. 4 is a view like Fig. 2 but showing the parts in the position they occupy after the release has been effected; Fig. 5 is a sectional view in substantially the horizontal plane of the axis of the alarm arbor of the clock; and,.Fig. 6 is a diagrammatic view showing the detent member in two different positions.

The furnace a has a train of parts including an ash pit damper b and a cold air damper c, and the weight at normally acting to move said train in the direction to open damper b and close damper c. To this train of parts is attached a flexible connection 6 extending over the pulleys f and. having attached thereto the hook g. (A smoke pipe damper it may be connected with the connection 6). When the hook is drawn down and there held the dampers Z) and h will be closed and the damper 0 opened; when the hook is released the weight 03 will cause damper 0 to close and dampers b and h to open.

i is a suitable case having a front hinged door y and a back wall is. This case is adapted to receive an ordinary alarm clock Z; that is, a clock which may be set so that at a certain hour its spring-actuated alarm arbor m will be released and allowed to rotate. The said arbor has the usual key n which in the present instance I employ as a member of a separable clutch.

In a bearing bracket 0 secured to the back wall is of the case is journaled a shaft 29 which carries on its inner end a clutch member g to interlock with the clutch member n,' the outer end of the shaft 79 carries a detent o in the form of a disk having a projecting arm 8 to engage a stop t on the back wall 7c of the case and limit the rotary movement of the detent in the direction of the arrow in Fig. 2 to 90. Opposite the arm 8 the detent has a peripheral notch u whose right side a is steep or abrupt and whose left side c approaches close to a right angle with a line extending through the axis of the detent longitudinally of its arm 8 (see Fig. 6). The case i is mounted in such a position (Fig. 1) that when the hook g is engaged in the notch a of the detent, the detent being in the position shown in Fig. 2, said hook will be in dead center relation to the detent.

Operation:- The clock being wound, including its alarm mechanism it is placed in the case and its clutch member a interlocked with the clutch Q of shaft p of the detent, the detent being in the position shown in Fig. 2. It will be observed Fig. 2) that at this time the hook stands in dead-center relation to the detent r, the pressure which the weight (Z causes it to exert on said detent being radially toward its axis p; thus any torsional strain upon the always delicate parts of the alarm mechanism of the clock, is avoided, the resistance to the pull of the weight being substantially wholly assumed by the shaft p. The hook g is then pulled down and engaged in the notch of the detent. The hook thus maintains the dampers b and 7:. closed and damper 0 open, contrary to the influence of the weight (Z to reverse the position of said dampers. On the approach of the time for the alarm arbor m to be released by the clock mechanism, said arbor will turn in the direction of the arrow in Fig. 2. In this operation the hook will be released, allowing the weight to efiect the operation of the dampers which is peculiar thereto. The sounding of the alarm-bell w of the clock will be of only suflicient duration just tent, the hook y will slip out of said notch almost immediately after the detent begins to rotate-an object particularly aimed at by the present invention in that thereby member and exerting dead-center pressure there is no material torsional strain imposed on the alarm arbor of the clock due to the weight (Z. It will further be noted that because the hook is engaged with an element having its own independent bearing in a suitable support (/0) no upward strain 011 the arbor m occurs.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. In combination, a suitable support, a

peripherally notched rotary detent member 5 journaled therein, an alarm clock having an E alarm arbor separately clutched with said member, a hook engaged in the notch of said member and exerting dead-center pressure 5 Copies of this patent may be obtained for five cents each, by addressing the Commissioner-of Patents.

journaled therein, an alarm clock havingan alarm arbor separa'bly clutched with said member, a hook engaged in the notch of said on the latter, a normally moved furnace controlling means, and a flexible connection connecting the hook with said controlling means, the notch of said detent having the side thereof which is in advance during the alarm rotation of said arbor less steep than i the opposite side of said notch, substantially as described. A V

In testimony whereof I affix my signature in presence of two witnesses.

JOHN BENTON.

Witnesses: 7

JOHN W. STEWARD,.- EDMUND B. RANDALL.

' Washington, D. C. 

